Turnbuckle.



J. 0. C. BRIGGS.

l TURNBUCKLE.

.APPLICATION FILED DEC. 11.1905

yPATEKITED Nov. 1a, 1906.-

" L INVENTOR.

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ATTORNEY.

" the perfect exclusion UNITED STATES PATENT OFFICE.

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Specification of Letters Patent.

Patented Nov. 13, 1906.

Application filed December l1, 1905. Serial Nox 291.221.

To all whom, it may concern:

Be it known that I, JOHN O. C. BRIGGs, a citizen of the United States, residing at East Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Turnbuckles, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to turnbuckles adapted for all uses, but more particularly to such as are employed under conditions of emergency, such as in the lashings of life-boats, where an instantaneous release of the lashings or the davit-guy is imperative.

The primary objects of my invention are from the device of air and congealed moisture and capacity for adjustable and instantaneous release.

To the above ends my invention essentially consists in the novel construction and combination of parts hereinafter described, and illustrated in the accompanying drawings, wherein- Figure l is a side elevation of a turnbuckle embodying my invention; Fig. 2, a vertical central section of a portion of the same, showing parts in side elevation; and Figs. 4'3 and 4 transverse sections on lines and y y, respectively, of Fig. 2.

Like reference characters indicate like parts throughout the views.

A convenient embodiment of my invention consists of a cylindrical barrel or body A, having an internal base or abutment a. The lower end of the body has a threaded aperture b to receive and engage the threads b upon a longitudinally-movable screw-rod B, provided with the usual hook or eye b2. The body includes upon its upper extremity a collar O, fixed by threads c or in any other convenient manner to the body end. The collar is provided with an external annular shoulder or seat c to receive an annular flange d upon the upper portion of a hook or eye member D, which is slidably mounted in the collar of the body A and has a shank portion d extending within the body and provided with a series of ribs d2, having inclined or conical-shaped sides and flat upper surfaces or shoulders da. Fixed by threads d4 or otherwise to the bottom of shank d is a disk d5. Pressing against the lower face of this disk and resting upon the base a within the body A is a spiral spring E.

Upon diametrically opposite sides of the body are tubularprojections F and G, pro-` vided, respectively, with central apertures j and g and annular external seats or shoulders f and g. The exterior of the projection f is provided with threads f2 to engage the threads of an interiorly threaded cap II, which has an internal annular shoulder h. A slidable stop I, transversely mounted in the body, has a flat rectangular head t, provided with a semicircular inclined recess *L2 upon its inner margin and carrying upon its opposite margin a stem t3, adapted to II and projection F. A spiral spring J sur-v rounds the shank and has one end resting against the cap-shoulder h and the other end against the stop-head I, thereby normally forcing the head into .engagement with the ribbed shank d.

A plunger K is and comprises a forked or contacting with the head provided with a stem or mounted in the aperture g of the projection G. The outer extremity of the stem K is engaged by threads k2 or otherwise with the cap L, slidably mounted on the projection G. Pivoted to lugs Z upon the cap L by pin l is a lever M, whose free end constitutesa handle m, parallel with the body A, and is pivoted at its other end to a link N, which in turn is pivoted to a lug a upon the body.

The operation of the turnbuckle is as fol lows: The hook members D and b2 are each engaged with the loops or eyebolts or other desired portions of the lashin s, and the body A is manually rotated upon t e threaded rod B to secure the desired tension, In locked or engaged position the stop I engages the ribbed shank d of the hooked member D, the stop-head i thereof restin upon the flat face d3 of one of the ribs d2, vas sghown in Fig. 2.

When in case of sudden emergency it is desired to release the lashings, the handle m of the lever is manually pressed toward the body A, thereby forcing inwardly thep 1unger K, whose forked head lc presses rearalso mounted in the body bifurcated head lc, of the stop I and shank 7c3, slidably `wardly against the tension of spring J, the

stop I thereby releasing the ribbed shank d The latter is thereupon forced upwardly by the spring E, thereby elevating the hook member D and releasing the lashings.

The exterior form of the ribs and the inclined surface I2 of the stop I permits the depression of the shank d any desired extent.

slide in the cap" IOO IIO

What I claim is- 1. In a device of the character described the combination with the body, of a threaded hook mounted in one end of the body, a slidable hook mounted in the other. end of the body, means in the body for retaining the slidable hook in locked position, and means in the body coacting with the retaining means for releasing the slidable hook member.

2. In a device of the character described the combination with the body, of a threaded hook mounted in one end of the body, a slidable hook provided with a shank mounted in the other end of the body, ribs upon the shank, means in the body for pressing the shank upwardly, a yielding stop in the body for forcing the stop out of engagement with the rib to release the shank.

3. In a device of the character described the combination with the body, of a threaded hook mounted in one end ofthe body, a slidable hook provided with a shank mounted in the other end of the body, ribs upon the shank, means in the body for pressing the shank upwardly, a transverselydisposed stop slidably mounted in the body, a spring upon the stop for pressing the stop into locking engagement with one of the ribs, and means in the body for forcing the stop out of engagement with the rib to release the shank.

4. In a device of the character described the combination with the body, of a threaded hook mounted in one end of the body a slidable hook provided with a shank mounted in the other end of the body, ribs upon the shank, means in the body for pressing the shank upwardly, a yielding stop in the body normally engaging one of the ribs, a plunger also-mounted in the body and in contact with the stop, and means upon the body acting through the plunger to force the yielding stop out of engagement with the rib.

5. In a device of the character described the combination with the body, of a threaded hook mounted in one end, of the body, a slidable hook provided with a shank mounted in the other end of the body, ribs upon the shank, means for pressing the shank u wardly, a yielding sto in the body normal y engaging one of the ri s, a tubular projection upon the body, a cap upon the projection, a plunger in the body contacting with the stop and fixed to the cap, lugs upon the cap, a lever fulcrumed in the lugs, a lug upon the body adjacent the rojection, and a link connecting the lug with one end of the lever.

`6. In a device of the character described, the combination with the body, of a threaded hook mounted in one end of the body, a slidable hook provided with a shank mounted in the other end of the body, ribs upon the shank, a disk upon the extremity of the shank, a spring in the body pressing against the disk, a yielding stop in the body engaging one of the ribs, and means in the body for forcing the stop out of engagement with the rib to release the shank.

7. In a device of the character described the combination with a bolt, of a socket in which the bolt is seated, means in the socket for upwardly pressing the bolt, a locking-pin engaging the bolt, and means for disengaging the locking-pin.

8. In a device of the character described, the combination with a bolt, of a socket in which the bolt is seated, spring means in the socket for upwardly pressing the bolt, a lever-bar ivoted adjacent the socket, and a slidable ocking-pin pivoted to the lever-bar and engaging the bolt.

In testimony whereof I have afIiXed my signature in presence of two witnesses.

JOHN O. C. BRIGGS. Witnesses:

HoRATIo E. BELLows, WILLIAM H. WRIGHT. 

